Thermocouple Extension & Compensating wire
Thermocouple compensating wire is used to connect the electrode (cold side of thermocouple) with display instrument in order to form a temperature measurement system. The working temperature is -25~200℃.
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Thermocouple Wire
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Thermocouple compensating wire is used to connect the electrode (cold side of thermocouple) with display instrument in order to form a temperature measurement system. The working temperature is -25~200℃.
Our plant mainly manufacture type KX,NX,EX,JX,NC,TX,SC/RC,KCA,KCB compensating wire for thermocouple, and they are used in temperature measurement instruments and cables. Our thermocouple compensating products are all made abiding by GB/T 4990-2010 'Alloy wires of extension and compensating cables for thermocouples' (Chinese National Standard), and also IEC584-3 'Thermocouple part 3-compensating wire' (International standard).
EMF of compensating wire and the tolerance
| Thermocouple No.indexing |
Compensating and extension Wire type |
Usage Classification |
Measuring junction temperture/℃ |
Standard EMF value/μV |
Precision grade | General level | ||
| Tolerance μV | Thermal EMF range μV | Tolerance μV | Thermal EMF range μV | |||||
| SorR | SC or RC | G | 100 | 646 | ±30（±2.5℃） | 616~676 | ±60(±5.0℃) |
586~706 |
| H | 100 | 646 | - | - | ±60(±5.0℃) | 586~706 | ||
| 200 | 1441 | - | - | 1381~1501 | ||||
| K | KX,KCA or KCB |
G | -25 | -968 | ±44(±1.1℃) | -924~-1012 | ±88(±2.2℃) | -880~-1056 |
| 100 | 4096 | 4052~4140 | 4008~4184 | |||||
| H | -25 100 200 |
-968 4096 8138 |
±44(±1.1℃) |
-924~-1012 4052~4140 8094~8182 |
±88(±2.2℃) | -880~-1056 4008~4184 8050~8226 |
||
| N | NX or NC | G | -25 100 |
-646 2774 |
±43(±1.1℃) | -603~-689 2731~2817 |
±86(±2.2℃) | -560~-732 2688~2860 |
| H | -25 100 200 |
-646 2774 5913 |
±43(±1.1℃) | -603~-689 2731~2817 5870~5956 |
±86(±2.2℃) | -560~-732 2688~2860 5827~5999 |
||
| E | EX | G | -25 100 |
-1432 6319 |
±81(±1.0℃) | -1351~-1513 6238~6400 |
±138(±1.7℃) | -1294~-1570 6181~6457 |
| H | -25 100 200 |
-1432 6319 13421 |
±81(±1.0℃) | -1351~-1513 6238~6400 13340~13502 |
±138(±1.7℃) | -1294~-1570 6181~6457 13283~13559 |
||
| J | JX | G | -25 100 |
-1239 5269 |
±62(±1.5℃) | -1177~-1301 5207~5331 |
±123(±2.5℃) | -1116~-1362 5146~5392 |
| H | -25 100 200 |
-1239 5269 10779 |
±62(±1.5℃) | -177~-1301 5207~5331 10717~10841 |
±123(±2.5℃) | -1116~-1362 5146~5392 10656~10902 |
||
| ±62(±1.5℃) | ||||||||
| T | TX | G | -25 100 |
-940 4279 |
±30(±0.5℃) | -910~-970 4249~4309 |
±60(±1.0℃) | -850~-1000 4189~4339 |
| H | -25 100 200 |
-940 4279 9288 |
±489±0.8℃) | -892~-988 4231~4327 9240~9336 |
±90(±1.5℃） | -850~-1030 4189~4369 9198~9378 |
||
Compensating wire reciprocating resistance
| Compensation wire type | Reciprocating resistance at 20℃ Ω/m(less than) | |||||
| 0.2m㎡ | 0.5m㎡ | 1.0m㎡ | 1.5m㎡ | 2.5m㎡ | ||
| SC or RC | 0.25 | 0.10 | 0.05 | 0.03 | 0.02 | |
| KCA | 3.50 | 1.40 | 0.70 | 0.47 | 0.28 | |
| KCB | 2.60 | 1.04 | 0.52 | 0.35 | 0.21 | |
| KX | 5.50 | 2.20 | 1.10 | 0.73 | 0.44 | |
| EX | 6.25 | 2.50 | 1.25 | 0.83 | 0.50 | |
| JX | 3.25 | 1.30 | 0.65 | 0.43 | 0.26 | |
| TX | 2.60 | 1.04 | 0.52 | 0.35 | 0.21 | |
| NC | 3.75 | 1.50 | 0.75 | 0.50 | 0.30 | |
| NX | 7.15 | 2.86 | 1.43 | 0.95 | 0.57 | |
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